Note 16 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

			Fair Value Measurements at December 31, 2014 Using
Description	Balance as of December 31, 2014		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
U.S. Government agencies and corporations		194,219		---		194,219		---
States and political subdivisions		19,380		---		19,380		---
Mortgage-backed securities		2,014		---		2,014		---
Corporate debt securities		7,104		---		7,104		---
Other securities		127		---		127		---
Total securities available for sale	$	222,844	$	---	$	222,844	$	---

			Fair Value Measurements at December 31, 2013 Using
Description	Balance as of December 31, 2013		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
U.S. Government agencies and corporations		147,854		---		147,854		---
States and political subdivisions		23,456		---		23,456		---
Mortgage-backed securities		2,840		---		2,840		---
Corporate debt securities		7,395		---		7,395		---
Other securities		167		---		167		---
Total securities available for sale	$	181,712	$	---	$	181,712	$	---

Fair Value Measurements, Nonrecurring [Table Text Block]

				Carrying value
Date	Description	Balance		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	Assets:
December 31, 2014	Impaired loans net of valuation allowance	$	7,224	$	---	$	---	$	7,224
December 31, 2013	Impaired loans net of valuation allowance		1,989		---		---		1,989

				Carrying Value
Date	Description	Balance		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	Assets:
December 31, 2014	Other real estate owned net of valuation allowance	$	4,744	$	---	$	---	$	4,744
December 31, 2013	Other real estate owned net of valuation allowance		4,712		---		---		4,712

Fair Value Inputs, Assets, Quantitative Information [Table Text Block]

	Valuation Technique	Unobservable Input	Range (Weighted Average)
Impaired loans	Discounted appraised value	Selling cost(1)		10%	(2)
Impaired loans	Present value of cash flows	Discount rate		5.88%		-	9.50%	(6.15%)

	Valuation Technique	Unobservable Input	Range (Weighted Average)
Impaired loans	Discounted appraised value	Selling cost(1)		0%	-	10.00%	(5.00%)
Impaired loans	Present value of cash flows	Discount rate		6.25%	-	9.50%	(6.75%)

	Valuation Technique	Unobservable Input	Range (Weighted Average)
Other real estate owned	Discounted appraised value	Selling cost		0%	(1)	-	11%	(8.60%)
Other real estate owned	Discounted appraised value	Discount for lack of marketability and age of appraisal		0%		-	48.77%	(20.81%)

	Valuation Technique	Unobservable Input	Range (Weighted Average)
Other real estate owned	Discounted appraised value	Selling cost		0%	(1)	-	10.00%	(9.83%)
Other real estate owned	Discounted appraised value	Discount for lack of marketability and age of appraisal		0%		-	29.60%	(8.66%)

Fair Value, by Balance Sheet Grouping [Table Text Block]

	December 31, 2014
			Estimated Fair Value
	Carrying Amount		Level 1		Level 2		Level 3
Financial assets:
Cash and due from banks	$	12,894	$	12,894	$	---	$	---
Interest-bearing deposits		102,548		102,548		---		---
Securities		384,296		---		390,547		---
Restricted securities		1,089		---		1,089		---
Mortgage loans held for sale		291		---		291		---
Loans, net		597,203		---		---		633,063
Accrued interest receivable		5,748		5,748		---		---
Bank-owned life insurance		21,797		21,797		---		---
Financial liabilities:
Deposits	$	982,428	$	765,682	$	---	$	216,469
Accrued interest payable		68		68		---		---

	December 31, 2013
			Estimated Fair Value
	Carrying Amount		Level 1		Level 2		Level 3
Financial assets:
Cash and due from banks	$	13,283	$	13,283	$	---	$	---
Interest-bearing deposits		98,066		98,066		---		---
Securities		345,695		---		341,049		---
Restricted securities		1,414		---		1,414		---
Mortgage loans held for sale		1,276		---		1,276		---
Loans, net		587,463		---		---		616,755
Accrued interest receivable		5,949		5,949		---		---
Bank-owned life insurance		21,181		21,181		---		---
Financial liabilities:
Deposits	$	960,036	$	718,327	$	---	$	247,753
Accrued interest payable		92		92		---		---